Cone-type loud speaker



Sept. 29, 1931. J. 5. TIMMONS 1,825,561

CONE TYPE LOUD SPEAKER Fil Deo- 9, 1926 s Sheets-Sheet 1 2w 1 4&

Sept. 29, 1931. J. 5. TIMMONS 1,825,561

CONE TYPE LOUD SPEAKER Fil D 9, 1926 3 Sheets-Sheet 2 Sept. 29, 1931. J. 5. TIMMONS CONE TYPE LOUD SPEAKEI Fileq Dec- 9, 1926 3 Sheets-Sheet 3 Patented Sept. 29, 1931 UNITED STATES PATENT OFFICE T JOHN S. TIMMON S, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO J. S. TIMMONS,

INCORPORATED, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENN- SYLVANIA CONE-TYPE LOUD SPEAKER Application filed December 9, 1926.

and so secured to another portion of said structure as to serve as a supportlng wall bracket without the necessity for additional parts.

A further object of my invention is to provide a loud speaker with a handle that is positioned at the balance point thereof.

Astill further object of my invention is to provide a packin box for aloud speaker having panels mova le into open position to afford access to the front and rear sides of the loud speaker. Thus a dealer may demon strate and test a loud speaker without the necessity for removing the same from the box.

Other objects and applications of my invention, as well as details of construction and operation, whereby my invention may be practiced, will be apparent more fully hereinafter, when taken in connection with the accompanying drawings, wherein Fig. 1 is a transverse sectional view of a loud speaker embodying my invention;

Fig. 2 is a rear elevational viewof the structure of Fig. 1 looking from the right;

Fig. 3-is an inverted plan view of the base member shown in Fig. 2;

Fig. 4 is a side elevational view of the loud speaker in Fig. 1 but showing the base member positioned to serve as a supporting wall bracket;

Fig. 5 is a detail view of a portion of the frame and base member 1.

Fig. 6 is a front elevational view of a packing box, for the loud speaker of the previous figures;

Fig. 7 is a top plan view of the structure of Fig. 6; and

Fig; 8 is a view partially in section, partially in elevation, taken on the line 88 of Fig; 7 showing. the front and rear panels partly removed.

Serial No. 153,570.

In the illustrated embodiment of my invention shown in the drawings, a sound-Wave translating device 1 comprises front and rear diaphragms 2 and 3, the peripheral edges of which are secured together at 4 to provide a single vibratory unit. The front diaphragm 2 is of conical form with an apex 5 thereof eccentrically disposed, and it is provided with an aperture 6 for a connecting rod 7 The rod 7 may be rigidly secured to the apex 5 by means of a clamping device 8 that is mounted on the outer side of the apex 5 in order to be readily accessible. The rear diaphragm 3 is oppositely dished, and it is I provided with an enlarged opening 9.

The diaphragms 2 and 3 may be supported on a horizontal plane 11 by meansof a pedestal 12 comprising a vertically positioned frame 13 and a removable base member 14 constituting a foot for said pedestal. The frame 13 which may be a rough casting, comprises a substantially circular portion 15, a marginal edge 16 of which is apertured to receive clamping screws 17 which pass through ad acent perforations 18 in an inner peripheral portion 19 of the rear diaphragm 3 and also throu h perforations 21 in a clamping ring 22. The peripheral portion 19' is preferably bent on the circular line 20 so as to be positioned in the plane of the marginal edge portion 16, thereby facilitating the construction and assembly of these parts.

7 The ring 22 and the edge portion 16 of the frame 13 respectively engage the adjacent inner and outer sides of the flat diaphragm edge portion 19. The edge portion 19 may be clamped in position by the screws 17 and spring strips 23 that abut against the inner side of the ring 22. The ring 22 is preferably of cardboard, whereby a tight connection may be assured upon the tightening of the clamping means 17, 23. An advantage of using such flexible material as cardboard is that it readily accommodates itself to irregularities in the diaphragm edge portion 19 caused by unevenness in the bearing side of the frame edge portion 18.

In order that a phone unit 24 for the connecting rod 7 may be moved into and out of the chamber formed by the oppositely dished diaphragm 2 and 3, I provide the frame 13 with an opening having side walls 26 and 27 and upper and lower walls 28 and 29, respectively. The side wall 26 and 27 and the lower wall 29 are respectively provided with apertures 31 through which clamping screws 32 may pass from complementary ends 33 of bracket arms 34, 35 and 36. These arms eX- tend inwardly from the frame 13 into the chamber formed between the diaphragms 2 and 3 and terminate in a base portion 37 which is secured in abutting relation to the phone unit 24 by bolts 38. Thus, a removable supporting structure is afforded the phone unit 24, whereby phone unit may be readily detached from the supporting pedestal 12 without disturbing adjacent parts.

The frame 13 is provided with an additional opening 39 that is spaced from the upper edge 28 of the opening 25 to form a handle portion 41 capable of being gripped,

as shown by the dot-and-dash lines in Fig. 2. The handle 41 is preferably positioned in proximity to the center of gravity of the device 1 whereby said device may balance when it is carried from place to place by the handle 41.

In addition to the substantially circular portion 15, the frame 13 may also include a depending extension 42 which terminates in a horizontally flanged portion 43 defining a supporting surface 44. The surface 44 is preferably positioned just above an adj accnt lower edge portion 45 of the diaphragms 2 and 3, so that it may not be observed from the front of the device 1.

The base member 14, which also is av rough casting, may be of a hollow construction, a lower edge being of elliptical-like form and .spaced from the floor 11 by pairs of front and rear rubber supporting bosses 47 and 48. The hollow structure 4 is provided with an upward extension 49, forming a substantially vertical rear wall portion 50 and a substantially horizontal top wall portion 51 defining a supporting surface 52 adapted to co-act with the supporting surface 44 of the frame 13. These two surfaces may be clamped in abutting relation by means of a pair of bolts 53 which pass through pairs of apertures 54 and 55 respectively formed on the surface 44 and 52. For the sake of con venience, the bolts 54 may be provided with clamping wing nuts 56.

My invention further contemplates a loud speaker which may be not only mounted on a stand or cabinet, as shown in Fig. 1, but which may also be hung on a wall surface 57, as shown in Fig. 4, without the use of additional parts. To this end, I provide the frame 13 with a second supporting surface 58 which preferably forms the outer side of the hand-grip portion 41. The portion 41 is provided with a pair of apertures 59 having a spacing corresponding to that of the apertures 55 in the base-member supporting surface 52. The apertures 59 are also adapted to receive the bolts 53. The change from a floor mounting to a wall mounting may therefore be effected merely by removing the bolts 53 from the clamping position of Fig.

1 and then passing the b0 5 53 through the base member 14 and the handle portion 41, as shown in Figs. 4 and 5. The base member 14 now functions as a sup orting wall bracket or wall abutment an by reason of its width and weight, tends to prevent the loud speaker 1 from swaying, as, for example, would be caused by a draft. The device 1 may be suspended in the position of Fig. 4 by means of a wire 61, the ends of which are secured to the base member 14 by screws 62, while a loop portion theredf is mounted on a wall hook or other means of su port 63. It is noted that the rear wall 51 of t e base member 14 does not extend substantially below the lower edge 28 of the handle portion 41 and that it further facilitates the handling of the loud speaker 1.

A still further feature of my invention is the provision of a packing box that permits the dealer to demonstrate an instrument while packed. Accordingl I provide a packing box, as shown in ligs. 6, 7 and 8, comprising a bottom wall 64, end walls and 66, side walls 67 and 68 and a top wall 69. The bottom wall 64 is providedwith a pair of spaced apertures 71 through which apair of bolts 72 may extend. The base mem-1 ber 14 of the pedestal 12 is similarly provided with spaced apertures 73 adapted to receive the projecting ends of the bolts 72.'

These parts may be rigidl clamped in position by wing nuts 74. imilarly a transversely extended bar 75 may be secured to the handle portion 41 of the frame '13 by bolts 76 that pass through the apertures 59 therein. provided with projecting portions 77, 78

forming shoulders 79 which abut againstthe end walls 65 and 66. These walls are also provided with recesses-80 extending inwardly from a rear edge 81 of the boxand are adapted to receive the projecting portions 77, 78, whereby the bar 75 may be readily inserted into or removed from the box.

7 Access may be had to the front diaphragm 2 in order to adjust the clamping means 8 by means of a vertically movable panel section 82 which may be moved from the closed position of Figs. 6 and 7 to the open position of Fig; 8. Access may be afforded to therear side of the device 1 by mounting the rear side wall 66 of the box in grooves 83, so that it may be moved vertically as a whole from the closed position of Figs. 6 and 7 to the open position of Fig. 8. In order to prevent a rearward movement of the cross bar 75 during transit, blocks 84 maybe secured to the end portions thereof and positioned in abut- The ends of the cross bar 75 are ting relation to the rear wall 66 of the box, as shown in Fig. 7

While I have shown only one embodiment of my invention for the purpose of descrlbing the same and illustrating its prlnclples of construction and operation, it is apparent that various changes and modifications may be made therein, without departing from the spirit of my invention, and I desire, therefore, that only such limitations shall be 1mposed thereon, as are indicated in the appended claims or as are demanded by the prior art.

I claim:

1. A support for a loud speaker, comprising a base member, means for securing said member to said loud speaker in one position to serve as a floor mount and in another position to serve as a wall mount, and means cooperating with said base member, whereby said loud speaker may be suspended in said last-mentioned position.

2. A supporting pedestal for a sound-wave translating device, having a diaphragm, comprising a frame provided with at least two supporting surfaces, and means whereby a base member may be secured to one of said surfaces to serve as a supporting foot or to the other of said surfaces to serve as a supporting wall bracket.

'3. A supporting pedestal for a translating device, comprising a frame .and a foot, said foot being removable, and means whereby said foot may be secured to said frame in another position so as to serve as a supporting wall bracket, the portion of said pedestal positioned substantially at the center of gravity of said device being formed to constitute a handle.

4. A pedestal for a sound wave translating device, comprising a frame positioned on a rear side of said device, said frame having .at least two supporting surfaces, of which one is positioned in proximity to the outer edge of said device, said frame having a hand grip portion positioned at substantially the balance point of said device and formed to provide said other supporting surface.

5. A pedestal for a sound wave translating device, comprising a frame positioned on a rear side of said device, said frame having at least two supporting surfaces of which one is positioned in proximity to the outer edge of said device, said frame having a hand grip portion positioned at substantially the balance point of said device and formed to provide said other supporting surface, and means whereby a base member may be secured to one of said surfaces to serve as a supporting foot or to the other of said surfaces to serve as a supporting wall bracket.

6. A pedestal support for a loud speaker having a vibratory cover, comprising a frame provided with at least two supporting surfaces and also an opening adapted to receive a phone unit and means whereby a base member may be secured to one of said supporting surfaces to afford said pedestal a foot and to the other of said surfaces to provide said device a side wall support, one portion of said frame adjacent to said opening constituting a handle.

7. A support for a loud speaker, comprislng a frame secured to a rear side of said loud speaker and provided with an extension termmating in a supporting surface, a base member also provided with a surface adapted to co-act with said supporting surface and clamping means extending through said surfaces for securing said frame on said base member, said frame having a second supporting surface, and means extending through said last-mentioned surface, whereby said base member may be secured thereto upon detachment from said first mentioned supporting surface.

JOHN S. TIMMONS. 

